Sap-evaporator.



No. 756,549. PATENTED APR. 5, 1904.

s. WIBRINGA.

SAP EVAPORATOR.

APPLIOATION FILED DB0. 2s, 190s.

N0 MODEL.

2 SHEETS-$311111 1.

Snom/toc 6191/014956@ MEP/ fc H'ofMuJa 1m: miams Patins co. moaurno..WASHINGTON. u f:

No. 756,549. PATENTED APR. 5, 1904. S. WIERINGA.

SAP EVAPORATOR.

APPLICATION FILED DBO. 2a. 190s.

No MODEL. 2 SHEETS-suma.

@wi-themen MM f2 LLM 7,/ l ,e2 7 /p- J5 /4 Patented April 5, 1904. V

UNiTEn STATES PATENT OEEICE.

SAMUEL VVIERINGA, OF IATSEKA, ILLINOIS.

SAP-EVAPORATOR.

SPECIFICATION forming part of Letters Patent No. 756,549, dated April 5,1904.

Application led December 23, 1903. Serial No. 186,396. (No modal.)

T all whom it may concern.:

Be it known that I, SAMUEL WIERTNGA, a citizen of the United States,residing at Ivatseka, in the county of Iroquois, State of Illinois, haveinvented certain new and. useful Improvements in Sap-Evaporators; and Ido hereby declare the following' to be a full, clear, and eXactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to evaporators, and more particularly to Vthosefor use in evaporating sorghum or other sap, and has for its object toprovide a device in which the sap will be heated during the process ofevaporation, and in which the sap will receive a preliminary heatingbefore reaching the evaporating-pan, this heating also assisting the sapto circulate through the pipes before reaching the eVaporating-pan.

A further object is to provide a construction which will be simple andcheap and in which the sap may be agitated in the pan without varyingthe temperature to which it is subjected.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is a side elevation of the complete device. Fig. 2 is alongitudinal section of Fig. 1. Fig. 3 is a top plan view. Fig. 4 is atop plan view of the furnace with the evaporating-pan removed, and Fig.5 is a section on line 5 5 of Fig. 1.

Referring now to the drawings, there is shown a furnace 6, having aslanting bottom 7, front and rear walls 8 and 9, and sides 10 and 11.rIhe sides extend below the bottom 7 of the furnace and are conveXed attheir lower edges, thus providing a pair of rockers l2, upon which theentire device may be moved. The points of greatest convexity of therockers are toward the forward end of the furnace in a position tosupport the weight of fuel which is disposed in this end of the furnace,and thus maintaining the device normally in a horizontal position.

a Between the sides and 11 and below the bottom 7 of the furnace are anumber of transverse braces 13 and also a plurality of tieirons 14,which are provided with turnbuckles for operation to draw the sidestogether at the bottom to compensate for spreading thereof.

In the end 8 of the furnace there is a firedoor 16, through which fuelmay be introduced, and projecting from the rear end 9 is a thimble 17,to which piping may be attached to form a fine.

In connection with the furnace just described there is employed anevaporating-pan 18, such as is usually found in similar devices, andwhich has secured to its bottom a pair of angle-irons 19, which receivethe upper edges of the sides 10 and 11 of the furnace therebetween.Within the evaporating-pan are a series of baffle-plates 20, which causethe sap to follow a tortuous passage down the pan.

As mentioned above, one of the particular features of this invention isthe arrangement of the pipes which conduct the sap to theevaporating-pan, the object being to give the sap a preliminary heatingand to facilitate the circulation of the sap through the piping. Toobtain this result, there is a pipe 21, which passes through the side 11below the bottom 7 of the furnace and is then turned upwardly andconnected, by means of a union 22, to another section of pipe 22', whichpasses upwardly through the opening 7 in the bottom 7 and which isattached at its upper end to a considerably larger pipe 23, which isdisposed vertically within the furnace and which is connected, by meansof a second union 24, to a pipe 26, which passes outwardly through theside 11 and is curved upwardly and over the evaporating-pan 18. Byreference to the drawings it will be seen that the pipe 23 is disposedwithin what may be termed the firebox77 of the furnace, and is thussubjected to thc heat thereof. To the upper end of the pipe 21 there isconnected a tank or other receptacle 27.

yIn use a fire is built in the furnace at its forward end and asufficient quantity of sap is placed in the receptacle 27, through whichit flows downwardly through the pipe 21 to `the pipe 23,V where thispipe having been heated by the lire it is quickly raised to a hightemperature and by reason of this heat and of the pressure of the sap inthe tank passes upwardly through the pipe 26 to the evaporating-pan 18,which is also heated by the fire in the furnace.

The furnace being mounted on the rockers l2, it is possible to oscillatethe device to cause the sap to flow downwardly in the pan 18, and itthus agitated and thoroughly heated. From this point the operation iscontinued, as is customary in sugar production.

By reason of the connection of the pipe 22 with the pipe 21 through themedium of the union 22 and of the connection of the upper end of thepipe 23 with the pipe 26 through the medium of the union 24 the pipe 23may be easily and quickly removed from the furnace to permit of thesubstitution of a new pipe therefor when the pipeV is burned out throughits subjection to the heat of the furnace.

In practice modilications of the specific construction shown may be madeand any suitable proportions and materials may be used without departingfrom the spirit of the invention.

What is claimed isl. An evaporator comprising a furnace, anevaporating-pan disposed thereon, a sap-conducting pipe connected at oneend with a sapreceiving Vessel and passing upwardly through the bottomof the furnace, an enlarged pipe removably connected with thefirst-named pipe and disposed vertically Within the furnace, and a thirdpipe removably connected with the upper end of the enlarged pipe andhaving its free end directed into the evaporating-pan.

2. An evaporator comprising a furnace, an evaporating-pan removablydisposed thereon, and a sap-conducting pipe connected at one end with asap-receiving vessel and passing vertically through the furnace andhaving its remaining end directed into the evaporatingpan, the portionof the pipe within the furnace being enlarged.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL WIERINGA.

